Mix Top Twenty: March 7, 2012

SANTA MONICA, CA - FEBRUARY 18: Hot Chelle Rae band members attend the 2nd Annual Cartoon Network Hall of Game Awards at Barker Hangar on February 18, 2012 in Santa Monica, California. (Photo by David Livingston/Getty Images)

#19: Gavin DeGraw "Not Over You"

NEW ORLEANS, LA - MARCH 01: Gavin DeGraw attends The Escpae to Total Rewards at Woldenberg Park on March 1, 2012 in New Orleans, Louisiana. (Photo by Skip Bolen/Getty Images for Caesars Entertainment)

#18: David Cook "Fade Into Me"

NEW YORK, NY - JUNE 28: David Cook performs at Best Buy on June 28, 2011 in New York City. (Photo by Astrid Stawiarz/Getty Images)

#17: Katy Perry "Part Of Me"

BEVERLY HILLS, CA - FEBRUARY 26: Katy Perry attends the 20th Annual Elton John AIDS Foundation Academy Awards Viewing Party at The City of West Hollywood Park on February 26, 2012 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for EJAF)

#16: Jason Mraz "I Won't Give Up"

PARK CITY, UT - JANUARY 21: Jason Mraz at the Burton Lounge at Park City Mountain Resort on January 21, 2012 in Park City, Utah. (Photo by Christopher Polk/Getty Images for Burton)

#15: Adele "Someone Like You"

LONDON, ENGLAND - FEBRUARY 21: (UK TABLOID NEWSPAPERS OUT) Adele accepts her Best Album Award at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave Hogan/Getty Images)

#14: Christina Perri "A Thousand Years"

US singer-songwriter Christina Perri poses on the red carpet arriving at the BRIT Awards 2012 in London on February 21, 2012. AFP PHOTO / BEN STANSALL (Photo credit should read BEN STANSALL/AFP/Getty Images)

#13: Florence + The Machine "Shake It Out"

Florence and the Machine perform during the BRIT Awards 2012 in London on February 21, 2012. AFP PHOTO / LEON NEAL (Photo credit should read LEON NEAL/AFP/Getty Images)

NEW YORK, NY - DECEMBER 21: Musician Matt Nathanson perfomrs at 'PLJ's 20th Annual Scott & Todd's Live broadcast/auction at Blythedale Children's Hospital on December 21, 2011 in New York City. (Photo by Mike Coppola/Getty Images)

#10: Foster The People "Don't Stop"

BEVERLY HILLS, CA - FEBRUARY 26: Musicians Cubbie Fink, Mark Foster and Mark Pontius of musical group Foster The People arrive at the 20th Annual Elton John AIDS Foundation Academy Awards Viewing Party at The City of West Hollywood Park on February 26, 2012 in Beverly Hills, California. (Photo by Larry Busacca/Getty Images for EJAF)

#9: Train "Drive By"

LAS VEGAS, NV - OCTOBER 29: Singer Patrick Monahan of Train performs onstage during the Andre Agassi Foundation for Education's 16th Grand Slam for Children benefit concert at the Wynn Las Vegas on October 29, 2011 in Las Vegas, Nevada. The event raises funds to help improve education for underserved youth in the Las Vegas community. (Photo by Ethan Miller/Getty Images)

SYDNEY, AUSTRALIA - FEBRUARY 26: Gavin Rossdale of Bush performs on stage during Soundwave 2012 at the Sydney Showground on February 26, 2012 in Sydney, Australia. (Photo by Mark Metcalfe/Getty Images)

#6: Daughtry "Crawling Back To You"

LOS ANGELES, CA - NOVEMBER 20: Singer Chris Daughtry of Daughtry performs onstage at the 2011 American Music Awards held at Nokia Theatre L.A. LIVE on November 20, 2011 in Los Angeles, California. (Photo by Kevork Djansezian/Getty Images)

#5: Bruno Mars "It Will Rain"

US singer-songwriter Bruno Mars accepts the International Male Solo Artist award at the BRIT Awards 2012 in London on February 21, 2012. (Photo credit should read LEON NEAL/AFP/Getty Images)

#4: Gym Class Heroes "Stereo Hearts"

ORLANDO, FL - FEBRUARY 26: Singer Travie McCoy of the Gym Class Heroes attends the 2012 NBA All-Star Game at the Amway Center on February 26, 2012 in Orlando, Florida. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Ronald Martinez/Getty Images)

LONDON, ENGLAND - FEBRUARY 21: Adele onstage at The Brit Awards 2012 at The O2 Arena on February 21, 2012 in London, England. (Photo by Dave J Hogan/Getty Images)

#1: Kelly Clarkson "Stronger"

INDIANAPOLIS, IN - FEBRUARY 05: Singer Kelly Clarkson exits after performing the national anthem during the Bridgestone Super Bowl XLVI Pregame Show at Lucas Oil Stadium on February 5, 2012 in Indianapolis, Indiana. (Photo by Christopher Polk/Getty Images)